Stop Spoofed Telegram Logins by Verifying HMAC and Binding IDs in Yii2
Verify Telegram Login Widget data with HMAC-SHA-256 in Yii2 to prevent account takeover and bind Telegram IDs to existing users safely.
🎯 Vulnerability: Web Security Vulnerability
💡 Defense Fix: Implement strict input validation, contextual output encoding, and enforce least-privilege authorization controls.